.sys-app {
    position: relative;
    width: 100%;
    height: 100%;
}

.sys-page {
    width: 100%;
    position: absolute;
    top: 80px;
    height: calc(100% - 80px);
    padding: 10px;
    overflow-x: hidden;
    overflow-y: auto;
}

.sys-error-page,
.sys-full-page {
    position: relative;
    width: 100%;
    height: 100%;
}

.sys-content {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    transition: all 0.3s linear;
    &.left {
        left: $leftNavWidth;
    }
    &.leftClose {
        left: $leftCloseNavWidth;
    }
    &.top {
        left: 0
    }
}